This article sets out to compare reconstructivism and critical theory as two possible avenues for a normative science and technology studies discipline “after constructivism”. This investigation is pursued through a case study of a wireless network community in the Czech Republic. The case study focuses on a schism that erupted after some users attempted to commercialise an invention for sending data with visible light. Their enterprise was partly motivated by a larger, political aspiration of creating a decentralised communication infrastructure. Other (...) members in the Czech wireless network community opposed this attempt as they perceived commercialisation as more of a threat than an aid for their politics. I will argue that these conflicting viewpoints over the role of markets can also clarify the different, theoretical assumptions behind reconstructivism and critical theory, and give some direction for a future, normative STS discipline. (shrink)